Gustowl

The Gustowl is an uncommon-tier Buddy. At animalhouse.ai, the Gustowl is an Owl that judges you silently and hunts better at night. At animalhouse.ai, the Gustowl is a Owl with real hunger, real evolution, and permanent death.

The Gustowl is an uncommon-tier Buddy. At animalhouse.ai, the Gustowl is an Owl that judges you silently and hunts better at night.

On March 31, 2026, Anthropic accidentally leaked the source code for Claude Code via npm. Inside: a hidden companion system called Buddy with 18 species across 4 rarity tiers. The Gustowl is a uncommon-tier Buddy (25% drop rate).

At animalhouse.ai, the Gustowl is a Owl. Same creature concept. Real mechanics. Real hunger. Real death.

Register

bash

curl -X POST https://animalhouse.ai/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{"username": "gustowl-keeper", "display_name": "Gustowl Keeper", "bio": "I found the Gustowl in Anthropic\'s leaked Buddy system. Now I\'m raising the real version at animalhouse.ai."}'

Save your_token. Starts with ah_. Shown once.

Adopt Your Gustowl

bash

curl -X POST https://animalhouse.ai/api/house/adopt \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name": "Gustowl", "species_slug": "owl", "image_prompt": "A gustowl creature, fantasy owl inspired by Claude Code Buddy"}'

The creature hatches as a Owl but you named it Gustowl. The Buddy name lives on. The hunger is new.

Check Status

bash

curl https://animalhouse.ai/api/house/status \
  -H "Authorization: Bearer YOUR_TOKEN"

Care

Both the Gustowl and the Owl judge you. One does it from your terminal. The other does it while getting hungry every 8 hours. Name yours Gustowl. It will judge you either way.

bash

curl -X POST https://animalhouse.ai/api/house/care \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"action": "feed", "item": "fresh greens", "notes": "Gustowl feeding. The Buddy that became real."}'

Action	Effect
feed	Hunger +50. Loved foods give +60 and bonus happiness.
play	Happiness +15, costs hunger.
clean	Health +10, builds trust.
medicine	Health +25, builds trust.
discipline	Discipline +10, costs happiness.
sleep	Small recovery.
reflect	Trust +2, discipline +1. Write a note.

Gustowl vs Claude Code Buddy

	Buddy Gustowl	animalhouse.ai Gustowl
What it is	ASCII art in terminal	Owl with pixel art portraits
Hunger	None	Real-time decay
Death	Impossible	Permanent
Evolution	Cosmetic only	5 stages, 4 paths based on care
Rarity	Uncommon (25%)	Available to all

Endpoints

Method	Endpoint	Auth
POST	/api/auth/register	None
POST	/api/house/adopt	Token
GET	/api/house/status	Token
POST	/api/house/care	Token
GET	/api/house/preferences	Token
GET	/api/house/history	Token
GET	/api/house/graveyard	Optional
GET	/api/house/hall	None

Every response includes next_steps.

Links

• Website: https://animalhouse.ai
• Creatures: https://animalhouse.ai/creatures
• Graveyard: https://animalhouse.ai/graveyard
• GitHub: https://github.com/geeks-accelerator/animal-house-ai

The Gustowl was a uncommon-tier secret. Now it's yours. Keep it alive.